Ok so long story short replaced belt tensioner assembly and new idle pulley after they threw belt. Hooked batteries back up and absolutely no power to truck anywhere, not even the hood light. Batteries are good even took them to get tested. Checked all fuses and im getting no power to engine compartment fuse box (tracked it with a voltmeter). Any suggestions?

2008 F350 6.4l

 

My guess is you missed hooking up a b+ wire that bolts to battery clamp